Error when trying to change menu in WordPress.

Hi there, a client has been getting this error on the site that I have designed when he tries to add a link to the menu. I have added a screenshot to show what error shows up. Do you guys have any idea on how to fix this? Do I just need to remove the plugin that is seemingly seeming to be causing this (W3 Totalcache)? Thanks a lot for your help in advance,

- Lucas

Ps. I hope the screenshot is readable, if not, please tell me, so I can make another one for my client.

  • Adam Czajczyk

    Hello Lucas,

    I hope you're well today and thank you for your question!

    The error points to both W3 Total Cache and our own SmartCrawl plugin. Did you have SmartCrawl installed on the site previously and you removed it?

    If so, please try following steps:

    - install it again on site using "WPMU DEV -> Plugins" page (via WPMU DEV Dashboard plugin)
    - clear W3 TC cache; the error should hopefully go away at this point
    - disable W3 TC
    - remove SmartCrawl again
    - enable W3 TC back and clear cache again and see if that error is still there.

    If you do have SmartCrawl installed still or above steps doesn't help, see please if only disabling W3 TC helps. If none of that works, could I take a closer look at your setup?

    For this you could grant me a support access as described here:

    Best regards,

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